Dual keyboard stand



FIG. 1 is a perspective view of a dual keyboard stand showing my new design with broken lines being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a top plan view of the dual keyboard stand;

FIG. 3 is a bottom plan view of the dual keyboard stand;

FIG. 4 is a front view of the dual keyboard stand; and,

FIG. 5 is a side view of the dual keyboard stand. 

The ornamental design for a dual keyboard stand, as shown and described. 